| 摘要 |
PROBLEM TO BE SOLVED: To prevent a formant enhancement function from being deteriorated by an echo canceling function. SOLUTION: The voice communication device includes: an echo canceller having an adaptive filter therein for generating a pseudo-echo signal based on a near-end signal from a near end and a far-end signal from a far end, and subtracting the generated pseudo-echo signal from the near-end signal, to erase an echo component in the near-end signal; a formant enhancement means for enhancing formant in the near-end signal output from the echo canceller; and a formant enhancement control means for controlling the formant enhancement by the formant enhancement means, in response to a convergence state of an adaptation operation of the adaptive filter. COPYRIGHT: (C)2010,JPO&INPIT
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